I would still give "credit" for it in the other persona's homesite.

Reasons:

There are a few people who go around people's homesites (which is not a bad thing) just to have a peek and if they see the same graphic on several homesites, they tend to contact the Demi's of a copyright violation. *G*

AND (the most important), you get the bragging rights! hehehehehe... ;D